When you need free, simple and powerful movie editor software you can use Avidemux, you can use Avidemux in many platform such as MS Windows and Linux. Basically I use Avidemux to remove some scene that i don’t want to see. Just need less than 10 minute to do encode back a 700Mb movie after edit it.

You can download it here :
http://fixounet.free.fr/avidemux/download.html